DE102018119315A1 - Attachment transport unit for transporting an attachment, in particular the main boom of a mobile crane - Google Patents

Abstract

The invention relates to an add-on part transport unit (5) for an add-on part, in particular a main boom, which can be detached from a mobile crane and which comprises a mobile transport device (6) for transporting the add-on part It can be proposed to equip the transport device (6) with at least one loading arm (11), the free carrying end (13) of which is provided for at least indirect temporal coupling with an attachment part that is to be picked up or has already been picked up. The loading arm (11) is pivotably arranged on the transport device (6) in such a way that an add-on part to be loaded or unloaded can be moved down onto the transport device (6) or from the transport device (6).

Description

• - Bereitstellen der Anbauteil-Transporteinheit in Verlängerung des Fahrzeugkrans;
• - Ausrichten einer Längsrichtung des Anbauteils zu einer Längsrichtung der Transportvorrichtung;
• - Ablegen eines Kopfendes des Anbauteils auf einem Ablagebock der Transportvorrichtung durch Abwippen des Anbauteils über dessen Wippzylinder; und
• - Entkoppeln des Wippzylinders von dem Anbauteil.

The invention relates to an add-on part transport unit for an add-on part detachable from a vehicle crane with a mobile transport device for transporting the add-on part, and an add-on part transport system with an add-on part transport unit and a vehicle crane system with an add-on part transport unit or an add-on part transport system. Furthermore, the invention relates to a method for receiving an add-on part in the form of a main boom, which can be detached from a mobile crane, onto a transport device of an add-on part transport unit, comprising the steps:

• - Provision of the attachment transport unit in the extension of the mobile crane;
• - Aligning a longitudinal direction of the attachment to a longitudinal direction of the transport device;
• - Placing a head end of the attachment on a trestle of the transport device by rocking the attachment over the rocker cylinder; and
• - Decouple the luffing cylinder from the attachment.

• - Bereitstellen der Anbauteil-Transporteinheit mit dem aufgenommenen Anbauteil im Bereich des Fahrzeugkrans derart, dass das Anbauteil mit seinem Fußende voran auf eine mit dessen Fußende korrespondierende Kopplungsstelle des Fahrzeugkrans hin ausgerichtet wird.

The invention also relates to a method for connecting an add-on part, which is received on a transport device of an add-on part transport unit, in the form of a main boom, which is supported with its head end on a support stand and with a basic box located between the head end and its opposite foot end on a support an associated mobile crane, comprising the step:

• - Provision of the add-on part transport unit with the added add-on part in the area of the mobile crane in such a way that the add-on part is aligned with its foot end forward to a coupling point of the mobile crane that corresponds to its foot end.

It is generally known that mobile cranes, in particular mobile cranes, mostly reach their different locations via the public road network. Its use requires compliance with a maximum axle load, in particular when driving over bridges is also limited to a maximum vehicle weight. If the actual axle load or the permissible vehicle weight exceed the respective permissible values, these must be reduced accordingly. To meet the official regulations, mobile cranes affected by this are usually designed so that at least one of their assemblies can be removed. A high reduction in weight can be achieved, for example, by removing the main boom, which for this purpose can be arranged in a detachable manner on a mostly swiveling superstructure of the mobile crane. Due to the dimensions and masses of the parts of such a mobile crane to be moved, suitable devices are required for this in order to enable practical assembly and disassembly of the main boom on site, in addition to its transportation, which is carried out separately from the rest of the mobile crane.

The German published application DE 198 23 380 A1 discloses a crane boom transport unit with a mobile transport device in the form of a semi-trailer for the transport of a main boom separated from a mobile crane. A trestle is arranged on the transport device, on which the main boom as an add-on part of the mobile crane can be supported in the region of its head end. A further support is provided via a grid-like shelf arranged on the transport device, by means of which the main boom can be supported on a basic box located between the head end and its foot end opposite the head end. The main boom is picked up in such a way that it first tilts onto the transport device and its head end, which is then supported on the storage stand and extended in the direction of the storage stand, is coupled to the latter. The main boom is then released from the rest of the mobile crane at its foot end. Utilizing the telescopic capability of the main boom, the projecting boom sections and the basic box can ultimately pull onto the transport device almost by their own power. Rollers arranged on the basic box roll on the rail-like shelf in order to enable continuous support.

The handling of the known crane boom transport unit requires that the supply lines that can be separated from the drive for dismantling the main boom must be temporarily connected to the drive again with the integration of extension lines. In addition to the support bracket supporting the head end, the rail-like support is required, on which the main boom of the main boom is guided, at least in sections, during its change in length and stored securely for transport. The design of the storage area needs to be adapted to the main boom of the mobile crane, in particular to avoid damage. If several mobile cranes belong to a machine park, each one must first be retrofitted in a suitable manner with the rollers. Sometimes only individual pairings of crane boom transport unit and suitable mobile crane can be realized. The subsequent assembly of a previously detached from the associated mobile crane and recorded on the transport device The main boom is sometimes difficult because any misalignment and / or angular misalignments between its foot end and the associated coupling point of the mobile crane can only be compensated for by complex maneuvering of the transport device and / or alignment of the swiveling superstructure.

From the published documents DE 35 32 296 A1 such as EP 0 867 399 A1 are self-propelled skip loaders, which serve to pick up and set down container containers. Such a skip loader comprises a loading area for receiving a container container. The container container is picked up and set down by pivoting the support arms articulated at the rear end of the loading area, the free end portions of which can be coupled to the container container for this purpose. The container containers are moved on a circular path, predetermined by the structural length of the support arms, between the base and the loading area. The support arms are pivoted by means of hydraulic cylinders, each of which is incorporated between the vehicle frame and one of the support arms.

The invention is therefore based on the object of improving a transport unit as shown above in such a way that the disassembly and assembly of the main boom of a mobile crane and transport as a whole can be carried out more easily. Furthermore, two methods are to be demonstrated, by means of which the mounting of a main boom detachable from a vehicle crane on a transport unit on the one hand and the connection of a main boom accommodated on a transport unit to a mobile crane on the other hand are simplified.

The device part of this object is achieved by an add-on part transport unit with the features of claim 1 and by an add-on part transport system with the features of claim 22 and a mobile crane system with the features of claim 23. The method part of this object is solved in a method with the features of claim 24 and in a method with the features of claim 27. In the respective dependent claims 2 to 21 and 25 to 26 and 28 to 29 are advantageous embodiments of the invention specified.

According to this, the add-on part transport unit designed according to the invention now comprises at least one loading arm pivotably arranged on its transport device. The at least one loading arm is used for loading the add-on part detached from the mobile crane. In a particularly preferred manner, the add-on part can be the main boom of a mobile crane. The at least indirect temporal coupling with the add-on part required for this takes place via the free supporting end of the loading arm, to which the add-on part can be attached or supported, for example, at least during the loading process. Due to the pivotable arrangement of the at least one loading arm on the transport device, it is possible for an add-on part to be loaded or unloaded to be moved upwards or downwards from the transport device in a simple manner.

The resultant advantage lies in the fact that loading and unloading of an add-on part onto or from the transport device is possible completely via the at least one loading arm of the add-on part transport unit. Particularly in the form of a main boom of the add-on part, loading is now significantly easier without having to use the active telescoping capability previously required. This reduces the effort required for the assembly and disassembly of an add-on part in the form of a main boom to a single connection or disconnection of its supply lines. Previously, these had to be extended with the temporary incorporation of intermediate lines in order to be able to control the drive used for telescoping even when its main boom was removed from the rest of the mobile crane. According to the invention, the usual handling of the mostly thick and therefore heavy supply and / or intermediate lines - such as hydraulic lines - can be omitted, which simplifies the process as a whole and significantly increases user friendliness. The telescopability is therefore no longer part of the loading process, since the main boom, which has preferably been retracted in terms of its length, can only be loaded and unloaded from the transport device via the at least one loading arm. An additional movement of its head end, in particular having the roller head, and / or its opposite foot end via telescoping of the main boom already detached from the mobile crane is eliminated.

Furthermore, the otherwise customary retrofitting of existing and equipment for new mobile cranes is reduced to a minimum or can even be omitted entirely, since the add-on part transport unit according to the invention permits almost universal use. Thus, it is usually possible to dispense with the otherwise necessary and, for example, fixed points to be welded to the segments or sections of the main boom for any sliding and / or rotating bodies, since the main boom itself no longer slides and / or rolls over its segments and / or must support its basic set.

According to a preferred development of the basic concept of the invention, the add-on part transport unit can also have a storage stand which is arranged on the transport device and which serves to support an add-on part which is to be charged or has already been charged. The add-on part can advantageously be supported on the support block via its head end, the remaining part of the add-on part being largely freely suspended above the transport device during loading and in the charged state. The contact with the transport device and the devices arranged thereon, which is reduced to only a few clearly defined areas of the attachment, precludes any damage to the attachment.

The invention provides that the add-on part transport unit can have a shelf which is arranged on the transport device and is provided for supporting an add-on part which is loaded onto the transport device. Said shelf serves as a console on which an attachment part loaded onto the transport device can be deposited in certain areas. In particular in combination with the storage stand, which is preferably spaced apart from the storage parallel to the longitudinal direction of the transport device, this results in a two-fold support option for an add-on part. In this way it is possible to decouple a charged add-on part from the at least one loading arm, in particular during its transport on the transport device. A preferred possible securing of the add-on part on the shelf and / or the trestle ensures that it is transported safely on the transport device. Securing here means a temporal coupling of the add-on part with the transport device via the storage and / or the storage stand, in order to prevent, for example, an otherwise possible offset or even falling off of the add-on part during its rolling transport associated with corresponding movements.

In a particularly preferred manner, the storage stand can be arranged on the transport device in such a way that it can be moved parallel to its longitudinal direction. This results in the possibility of exact positioning of the storage stand with respect to the attachment to be charged in each case, with a length different from that of another attachment. Particularly with a view to the system kinematics provided via the at least one swiveling loading arm, an add-on part supported on the displaceable storage stand can advantageously move relative to the transport device, for example by the head end supported on the storage stand being displaceable parallel to the longitudinal direction of the transport device during loading and unloading.

With regard to the arrangement of a trestle, it is considered to be particularly advantageous if the trestle has a configuration which enables the mobility of an attachment part which can be supported thereon. This means that, for example, a head end of the main boom of a mobile crane can be supported on the support stand without tension in order to be able to pivot a foot end of the main boom opposite the head end at least to a limited extent in space. In other words, the trestle thus enables a quasi-articulated support of an attachment on it.

According to the invention, the at least one loading arm can be pivotably arranged on the transport device in such a way that an add-on part to be loaded or unloaded can be moved on a path or a path which contains a movement component both in a vertical direction and in a horizontal direction. Using the example of an add-on part designed as a main boom, this results in simple moving up and down on or from the transport device without the active length change of the main boom being required for this.

The at least one loading arm, which can be pivoted for loading an attachment, such as a main boom, can advantageously be arranged on the transport device in such a way that an attachment that is at least indirectly coupled to its free carrying end and at the same time supported with its head end on the movable support block is correspondingly movable. Through a swiveling movement of the loading arm, it is now possible, on the one hand, to place an attachment to be picked up or charged in a loading movement, which then takes place relative to the transport device, towards storage, in particular away from an associated mobile crane. On the other hand, by means of an opposite pivoting movement of the loading arm, it is possible to move an attached attachment part into an unloading movement relative to the transport device, away from the storage area, in particular towards the associated mobile crane. Both the loading and the unloading movement take place as combined translatory and limited rotational movement relative to the transport device.

The reason for this is the mounting of the add-on part which takes place during loading over two regions which are at a distance from one another, namely on the at least one loading arm and the movable storage stand. As a result, its head end supported on the support block can be moved parallel to the transport device during the pivoting movement of the loading arm, while its Head end opposite foot end is moved on a circular path of the loading arm articulated on the transport device. The storage stand allows at least limited rotation, so that a head end of an add-on part supported on this enables its pivoting relative to the storage stand, which naturally occurs during loading. Due to the displaceability of the storage stand, it does not form a rigid abutment, but can follow the system-related kinematics due to the at least one loading arm parallel to the longitudinal direction of the transport device and, in the meantime, support an attachment to be charged or already charged or received, in particular at its head end.

The add-on part transport unit can preferably be designed in such a way that it enables the attachment of an add-on part, in particular its main boom, that can be detached from a rotatable superstructure of a mobile crane.

The transport device can advantageously be a semi-trailer. This can be made entirely for the intended purpose or have a commercially available semi-trailer as a base. By selecting a semitrailer that is suitable in relation to the required dimensions and payloads, this can be supplemented, for example, by the necessary components and can thus be economically expanded into a transport device according to the invention.

Even if the drive necessary for loading and unloading an add-on part could take the form of an active displaceability of the storage stand, the invention advantageously provides for a pivoting of the at least one loading arm that is active on the other hand. Of course, a combination of active drive of the storage stand and the at least one loading arm is also conceivable. In particular, the preferred active pivotability of the at least one loading arm permits precise guidance of the attachment part coupled to it, which is of great importance with regard to the possible dimensions and the weight of such an attachment part, such as a main boom.

According to a particularly preferred development of the invention, a total of two loading arms can be provided, which are then pivotally arranged on the transport device as a loading arrangement. This enables a better, since more even, weight distribution of the attachment, such as a main boom, to the loading arms. In addition, the loading arms and the add-on part can then be positioned in relation to one another in use such that the add-on part is essentially located between the two loading arms during loading. The loading arms can be controlled such that their respective pivoting movement (s) can be carried out either synchronously with one another and / or independently of one another. This can be done on the one hand by a rigid connection of the two loading arms, which inevitably brings about their mechanical synchronization. On the other hand, the otherwise independent mobility of the two loading arms can be controlled such that they can be moved either synchronously with one another or independently of one another as required. Depending on the type of coupling of the loading arms, for example with a main boom, their mutually independent mobility in particular enables a fine adjustment in the alignment of its foot end, which can be particularly advantageous when installing a main boom.

In view of the necessary temporal coupling of an add-on part with the carrying end of the at least one loading arm or the carrying member of a pair of loading arms, the invention proposes the use of a releasable holding means. Such a holding means belonging to the loading arm or the loading arrangement can preferably be designed to be flexible. Flexible here does not mean its elasticity, but rather the mobility of such a holding means in the sense of being limp. The holding means can therefore preferably be a band or a belt or a combination thereof. Further configurations and combinations are of course also conceivable, for example in the form of a chain, in particular a link chain, and / or a belt and / or a rope. Thus, a holding means designed in this way does not necessarily require a complementary design of an add-on part, for example by means of a connection point which is arranged specifically for this purpose on a main boom and corresponds to the holding means. In other words, such a holding means enables the add-on part transport unit to be used in many different ways in combination with different add-on parts.

If necessary, said holding means can be connected to the carrying end of the at least one loading arm. The holding means can particularly preferably be arranged detachably between the carrying ends of two loading arms. In the last-mentioned embodiment, a type of flexible mounting results, into which the main boom can be placed with a boom section. With a quasi-hanging support of an add-on part, there is at the same time an advantageous lateral guidance, since the flexible holding means naturally wraps around a part of an add-on part section from the underside of the add-on part.

With regard to the arrangement of the at least one pivotable loading arm or the two pivotable loading arms, a pivot point that is as low as possible is considered advantageous. For example, the transport device can have a loading area which faces an attached and essentially horizontally oriented add-on part, such as a main boom. In this context, it is proposed to steer the loading arm (s) via an axis of rotation below the loading area, so that it can be pivoted about the axis of rotation. This enables the lowest possible center of gravity for the proportionate introduction of weight of a mounted attachment into the transport device and from there onto the ground, for example via a chassis having wheels and / or chains. Compared to a possible articulation of the loading arm (s) on or above the loading area, the deep arrangement of the axis of rotation enables its greater length, whereby the translational displacement of an added part can be increased accordingly. In other words, a greater range can be achieved in relation to the displacement of an attachment parallel to the transport device.

With regard to the drive of the loading arm (s), various configurations are conceivable, such as in the form of at least one rotary drive arranged in the region of the pivot bearing (s). The add-on part transport unit can preferably have a linear drive incorporated between the at least one loading arm and the transport device. In the preferred embodiment with two loading arms, such a linear drive can be arranged as part of the loading arrangement between each of these loading arms and the transport device.

The linear drive in the sense of the invention can be all types of such drives which are, for example, pressure-operated, in particular pneumatically or preferably hydraulically driven. According to this, the linear drive can be a hydraulic cylinder, for example. Additionally or alternatively, this can also be driven via a gear, in which a rotary movement of a motor is converted into a translatory movement of the linear drive, such as by means of a roller or ball screw gear. In any case, a swiveling movement of the loading arm (s) is then based on a change in length of the linear drive (s).

The shape of the at least one loading arm should be adapted to the particular circumstances with regard to the design of the add-on part transport unit, taking into account the typical structure of a mobile crane. For this purpose, the / each loading arm can preferably have a straight center section, which extends between two end sections that are angled relative to it. In this embodiment, each of the two end sections and the middle section each form an angle between them. In a preferred manner, the end sections can be angled in the same direction, which results in an advantageous multiple-angled shape for the loading arm in order to effectively avoid any collisions with interference edges of the mobile crane and / or the add-on part transport unit.

In order to obtain an advantageous balance of forces with respect to the loading arm (s) and linear drive (s), it is considered advantageous if the central section of the loading arm has a coupling area which serves for the force-transmitting connection to the linear drive. The central section of the or a loading arm can be connected to a first end of the linear drive, while a second end opposite the first end of the linear drive is coupled to the transport device. The coupling between the linear drive and the transport device can take place, for example, via a bearing which is arranged on the loading surface of the transport device.

With regard to the multiple angled shape of the loading arm, its end sections can preferably be angled toward a side facing away from the linear drive.

According to an advantageous further development, it is conceivable that the loading arm is designed to be telescopic. This means that its length can be changed as required, which means that, for example, a larger distance between the loading unit and the vehicle crane can be bridged accordingly. As an alternative or in combination, an attachment can also be added to the transport device if necessary. For this purpose, the loading arm can be constructed in several parts, for example in the form of multi-shot segments.

The mobile transport device can be designed to be actively or passively movable. This means that the add-on part transport unit can be self-propelled, for example, so that it can be moved between its places of use and / or for maneuvering, so to speak, in a manner that is automobile, that is to say on its own initiative. Alternatively or in addition to this, in terms of its relocability, this can of course also only be carried along in the sense of a trailer. For this purpose, this can preferably be coupled to a suitable towing vehicle - such as a semitrailer - which then pulls and / or or pushed add-on part transport unit with it.

According to a preferred development, the at least one loading arm or the loading arrangement can be designed in such a way that it can be operated from an area which is not necessarily in the immediate vicinity. Usually, the drives arranged on vehicles for moving such devices are operated, for example, via an operating unit arranged in and / or on the vehicle itself. Here, the invention provides the advantageous possibility of operating the loading arm (s) from outside. This means the operation from outside a vehicle cabin, which in a self-propelled mobile transport device, for example, can be part of the add-on part transport unit designed in this way. In a preferred embodiment of the add-on part transport unit, in which its mobile transport device is, for example, coupled or can be coupled to a towing vehicle, said vehicle cabin can correspondingly be part of this towing vehicle.

The loading arm or the loading unit can be actuated particularly preferably by means of a wireless or wired operating unit. This provides the greatest possible flexibility for a person operating the add-on part transport unit. The possibility of spatial distance from the add-on part transport unit offers a much better overview, in order to ensure extremely precise control of the loading arm or the loading unit despite the sometimes considerable dimensions of such mobile cranes and, for example, their main boom. This is particularly true with regard to the possibility of compensating for misalignments and / or angular misalignments during the coupling of the main boom and crane vehicle via the separate control of two loading arms.

In order to enable the largest possible and tension-free support of a mounted add-on part, such as a main boom, it is proposed to arrange the at least one holding means in a correspondingly movable manner on the carrying end of one loading arm or on the carrying ends of two loading arms. This means, for example, the at least limited rotatability of the holding means relative to the loading arm, in particular a quasi free swing. In this way, the section of an add-on part that is in contact with the holding means is always held securely and is protected against any damage, for example due to backward forces of the holding means.

According to a particularly preferred embodiment of the holding means, it can be provided with a non-slip surface at least in some areas. Advantageously, a region of the holding means facing the attachment in the received state is appropriately equipped in order to correspondingly increase the static friction between the holding means and the attachment.

The invention provides that the transport device of the add-on part transport unit can have a coupling device which can be detachably connected to a corresponding coupling device of a mobile crane. The temporary coupling of the vehicle crane and transport device that is possible in this way ensures that no undesired relative movements can occur between them, for example during the disconnection or coupling process of the main boom. If said coupling permits the preferred transferability of vertical forces, this can eliminate the need for vertical support of the transport device that is otherwise necessary. In fact, the vertical forces occurring on the transport device can be transmitted to the mobile crane via the coupling device (s), which enables the entire add-on part transport unit to be constructed extremely economically by eliminating its own vertical support. The coupling devices can, for example, be a trailer coupling.

According to a preferred development of the invention, it is provided that the shelf serving to support a charged attachment is foldably arranged on the transport device. The foldable design of the shelf enables it to be folded down when not in use, so that the space available during loading of an attachment is maximized. In this way, an add-on part protruding in the horizontal direction relative to the rest of the vehicle crane, such as its main boom, can be largely underrun with the transport device without risking a possible collision with the storage area. The tray can then be set up in its functional position, for example, shortly before the attachment is finally placed on the transport device, in order to be available as a full support.

The attachment transport unit according to the invention now presented enables extremely simple disassembly and assembly of the attachment of a mobile crane. In particular, in the embodiment with two loading arms, for example, a main boom detached from the mobile crane can be transferred to the transport device and brought back to the mobile crane within a very short time. In combination with the holding means that can be arranged between the carrying ends of the loading arms, the section of the respective one that can be supported therein Attachment can be aligned in the horizontal orientation of its foot end by pivoting the two loading arms independently of one another. The retaining means or means partially wrap around the add-on part, which ensures extremely careful handling, for example with the lower shell of the base box of a main boom, with regard to deformation, durability, material abrasion, corrosion protection and / or safety.

The invention is also directed to an add-on part transport system which comprises an add-on part transport unit according to the invention as described above and a towing vehicle which can be coupled or coupled to a mobile transport device of the add-on part transport arrangement. The invention is also directed to a mobile crane system which comprises a mobile crane with a detachable main boom and an add-on part transport arrangement or an add-on part transport system designed to accommodate the main boom detached from the mobile crane. The attachment transport arrangement and / or the attachment transport system is the attachment transport arrangement according to the invention described above and / or the attachment transport system according to the invention described above.

The advantages resulting therefrom correspond to those already shown for the add-on part transport unit according to the invention, so that in order to avoid repetition, reference is made to the preceding explanations at this point.

• - Bereitstellen der Anbauteil-Transporteinheit in Verlängerung des Fahrzeugkrans;
• - Ausrichten einer Längsrichtung des Hauptauslegers des Fahrzeugkrans zu einer Längsrichtung der Transportvorrichtung;
• - Ablegen eines Kopfendes des Hauptauslegers auf einem Ablagebock der Transportvorrichtung durch Abwippen des Hauptauslegers über dessen Wippzylinder;
• - Entkoppeln des Wippzylinders von dem Hauptausleger, insbesondere durch Demontage eines Kopfbolzens.

Furthermore, the invention is directed to a method in which an add-on part detachable from a mobile crane, in particular from its rotatable superstructure, in the form of its main boom, is received on the transport device of an add-on part transport unit according to the invention as described above. The process includes the following steps:

• - Provision of the attachment transport unit in the extension of the mobile crane;
• - Aligning a longitudinal direction of the main boom of the mobile crane to a longitudinal direction of the transport device;
• - Placing a head end of the main boom on a trestle of the transport device by rocking the main boom over its luffing cylinder;
• - Decoupling the luffing cylinder from the main boom, in particular by dismantling a head bolt.

• - Verschwenken zweier Verladearme der Anbauteil-Transporteinheit derart, bis beide Verladearme mit ihren freien Tragenden in den Bereich eines zwischen Kopfende und Fußende gelegenen Grundkastens des Hauptauslegers ragen;
• - Anordnen eines Haltemittels zwischen den Tragenden der beiden Verladearme derart, dass sich das Haltemittel bis zu einem Grundkasten des Hauptauslegers erstreckt, insbesondere unterhalb des Grundkastens des Hauptauslegers hindurch erstreckt;
• - Herstellen einer lösbaren Verbindung zwischen Haltemittel und Grundkasten, insbesondere durch zumindest teilweises Umgreifen des Grundkasten mit dem Haltemittel von einer Unterseite her;
• - Verschwenken der beiden Verladearme derart, dass der Hauptausleger zumindest einseitig über das, insbesondere den Grundkasten des Hauptauslegers von der Unterseite her zumindest teilweise umgreifende, Haltemittel angehoben und so eine lösbare Verbindung zwischen dem Fahrzeugkran und seinem Hauptausleger zumindest teilweise entlastet wird;
• - Trennen von Versorgungsleitungen zwischen Fahrzeugkran und seinem Hauptausleger, insbesondere an den dafür vorgesehenen Kupplungen;
• - Lösen der Verbindung zwischen Hauptausleger und Fahrzeugkran, insbesondere durch Demontage eines diese miteinander verbindenden Fußbolzens;
• - Verschwenken der beiden Verladearme derart, bis der über den parallel zur Längsrichtung der Transportvorrichtung verschieblichen Ablagebock abgestützte, und insbesondere durch Zwischenschaltung des Haltemittels indirekt mit den Tragenden der Verladearme gekoppelte, Hauptausleger durch eine relativ zur Transportvorrichtung erfolgende, kombinierte translatorische sowie begrenzt rotatorische Auflade-Bewegung vom Fahrzeugkran weg auf die Transportvorrichtung aufgenommen und auf einer Ablage der Transportvorrichtung abgelegt, insbesondere abgestützt, wird.

According to the invention, the method further comprises the following steps:

• - Swiveling two loading arms of the add-on part transport unit in such a way until both loading arms protrude with their free supports into the area of a basic box of the main boom located between the head end and foot end;
• Arranging a holding means between the carrying ends of the two loading arms in such a way that the holding means extends up to a base box of the main boom, in particular extends below the base box of the main boom;
• - Establish a releasable connection between the holding means and the base box, in particular by at least partially reaching around the base box with the holding means from a bottom;
• - Swiveling the two loading arms in such a way that the main boom is lifted at least on one side via the holding means which at least partially encompasses the base boom of the main boom from the underside, thus relieving at least partially a releasable connection between the mobile crane and its main boom;
• - Disconnect supply lines between the vehicle crane and its main boom, especially on the couplings provided for this purpose;
• - Loosening the connection between the main boom and mobile crane, in particular by dismantling a foot bolt connecting them;
• - Swiveling of the two loading arms until the support bracket, which is supported by the support block that can be moved parallel to the longitudinal direction of the transport device, and, in particular, is indirectly coupled to the load bearing arms of the loading arms by interposing the holding means, by means of a combined translational and limited rotary charging movement that takes place relative to the transport device is picked up away from the mobile crane on the transport device and placed on a tray of the transport device, in particular supported.

Advantageously, the mobile crane can be supported in a suitable manner before the loading movement or before a step preceding the loading movement, for example by means of supporting devices arranged thereon. The support can preferably take place over the respective subsurface.

According to a preferred development of the method according to the invention, before the charging movement or before one of the charging movement preceding steps, the add-on part transport unit is coupled to the mobile crane. To transport the main boom received on the transport device, the support of the mobile crane is released accordingly and the add-on part transport unit is decoupled from the rest of the mobile crane. The main boom can advantageously be secured for transport on the transport device, for example by means of suitable transport securing means.

• - Bereitstellen der Anbauteil-Transporteinheit mit dem aufgenommenen Hauptausleger im Bereich des Fahrzeugkrans derart, dass der Hauptausleger mit seinem Fußende voran auf eine mit dessen Fußende korrespondierende, insbesondere an einem drehbaren Oberwagen gelegene, Kopplungsstelle des Fahrzeugkrans hin ausgerichtet ist.

Furthermore, the invention is directed to a method in which a main boom picked up or deposited on an add-on part transport unit according to the invention as described above is connected to an associated mobile crane. The main boom received in this way is supported with its head end on a support stand and with a basic box located between the head end and its foot end opposite this on a support. The process includes the following steps:

• - Provision of the add-on part transport unit with the main boom received in the area of the mobile crane in such a way that the main boom is oriented with its foot end forward to a coupling point of the mobile crane that corresponds to its foot end, in particular on a rotatable superstructure.

• - Verschwenken zweier Verladearme der Anbauteil-Transporteinheit derart, bis der Hauptausleger durch ein zwischen den Tragenden der Verladearme bereits angeordnetes sowie, insbesondere durch Umgreifen des Grundkastens von einer Unterseite her, lösbar mit dem Grundkasten verbundenes oder zuvor anzuordnendes sowie, insbesondere durch Umgreifen des Grundkastens von einer Unterseite her, lösbar mit dem Grundkasten zu verbindendes Haltemittel von der Ablage der Transportvorrichtung angehoben und mit seinem Fußende voran durch eine auf Basis der Schwenkbewegungen der Verladearme relativ zur Transportvorrichtung erfolgende, kombinierte translatorische sowie begrenzt rotatorische Ablade-Bewegung weg von der Ablage zumindest teilweise zum Fahrzeugkran hin bewegt wird;
• - bedarfsweises Ausrichten des Fußendes des Hauptauslegers gegenüber einer korrespondierenden Kopplungsstelle des Fahrzeugkrans durch synchrone und/oder voneinander unabhängige Schwenkbewegungen der Verladearme;
• - Verbinden des Hauptauslegers mit dem Fahrzeugkran, insbesondere durch Montage eines diese miteinander verbindenden Fußbolzens;
• - Verschwenken der beiden Verladearme derart, bis das lösbar mit dem Grundkasten des Hauptauslegers verbundene Haltemittel entspannt wird;
• - Ablösen des Haltemittels von den Tragenden der Verladearme;
• - Verbinden von Versorgungsleitungen zwischen Fahrzeugkran und seinem Hauptausleger, insbesondere an den dafür vorgesehenen Kupplungen;
• - vorheriges oder anschließendes Verbinden eines Wippzylinders des Fahrzeugkrans mit dem Hauptausleger, insbesondere durch Montage eines Kopfbolzens.

According to the invention, the method further comprises the following steps:

• - Swiveling two loading arms of the add-on part transport unit in such a way until the main boom is detachably connected to the basic box or to be arranged beforehand by an already arranged between the load bearing arms of the loading arms and, in particular by reaching around the basic box, and in particular by reaching around the basic box a lower side, releasably to be connected to the basic box holding means raised from the storage of the transport device and with its foot end ahead by a combined translational and limited rotational unloading movement based on the pivoting movements of the loading arms relative to the transport device away from the storage at least partially Mobile crane is moved;
• - If necessary, aligning the foot end of the main boom with respect to a corresponding coupling point of the mobile crane by means of synchronous and / or mutually independent pivoting movements of the loading arms;
• - Connecting the main boom to the mobile crane, in particular by assembling a foot bolt connecting them to one another;
• - Swiveling the two loading arms until the holding means releasably connected to the main boom of the main boom is relaxed;
• - Detachment of the holding means from the load arms of the loading arms;
• - Connecting supply lines between the vehicle crane and its main boom, in particular on the couplings provided for this purpose;
• - Previous or subsequent connection of a luffing cylinder of the mobile crane with the main boom, in particular by mounting a head bolt.

Advantageously, the mobile crane can be supported in a suitable manner before the unloading movement or before a step preceding the unloading movement, for example by means of supporting devices arranged thereon. The support can preferably take place over the respective subsurface.

According to a preferred development of the method according to the invention, the add-on part transport unit can be coupled to the mobile crane before the unloading movement or before a step preceding the unloading movement. For the subsequent movement and / or use of the mobile crane connected to the main boom, its support is released and the add-on part transport unit is decoupled from the remaining mobile crane.

The advantages resulting from the respective method according to the invention have already been shown in connection with the add-on part transport unit according to the invention or at least addressed accordingly, so that in order to avoid repetition, reference is made here to the preceding explanations.

Of course, the method according to the invention described in more detail above, for example on a main boom of a mobile crane, can also be used for other attachments. Depending on the design and integration of the respective add-on part, this can also be done by deleting and / or adapting the measure / s related to a luffing cylinder.

• 1 ein erfindungsgemäßes Fahrzeugkransystem in einer Seitenansicht,
• 2 einen Teil des Fahrzeugkransystems 1 aus 1 in Form einer Anbauteil-Transporteinheit,
• 3 einen Ausschnitt der Anbauteil-Transporteinheit aus 2 in veränderter Stellung,
• 4 den Ausschnitt der Anbauteil-Transporteinheit aus 3 in der Stellung gemäß 2,
• 5 eine alternative Ausgestaltung der Anbauteil-Transporteinheit aus 4,
• 6 eine weitere alternative Ausgestaltung der Anbauteil-Transporteinheit,
• 7 das Fahrzeugkransystem aus 1 in einem ersten Zustand,
• 8 das Fahrzeugkransystem 1 aus 7 in einem veränderten Zustand,
• 9 das Fahrzeugkransystem 1 aus 8 in einem veränderten Zustand,
• 10 das Fahrzeugkransystem 1 aus 9 in einem veränderten Zustand,
• 11 das Fahrzeugkransystem 1 aus 10 in einem veränderten Zustand und
• 12 das Fahrzeugkransystem 1 aus 11 in einem veränderten Zustand.

An embodiment of the invention will be explained in more detail with reference to the following description. Show it:

• 1 a vehicle crane system according to the invention in a side view,
• 2 part of the mobile crane system 1 out 1 in the form of an add-on part transport unit,
• 3 a section of the add-on part transport unit 2 in a changed position,
• 4 the section of the add-on part transport unit 3 in the position according to 2 .
• 5 an alternative embodiment of the add-on part transport unit 4 .
• 6 a further alternative embodiment of the add-on part transport unit,
• 7 the mobile crane system 1 in a first state
• 8th the mobile crane system 1 out 7 in a changed state,
• 9 the mobile crane system 1 out 8th in a changed state,
• 10 the mobile crane system 1 out 9 in a changed state,
• 11 the mobile crane system 1 out 10 in a changed state and
• 12 the mobile crane system 1 out 11 in a changed state.

1 shows the structure of one on a surface U parked vehicle crane system according to the invention 1 which is a mobile crane 2 with an attachable part in the shape of its main boom 3 as well as an attachment transport system according to the invention 4 includes. As can be seen, the one with its headboard 3a from the rest of the mobile crane 2 main boom facing away 3 with its the headboard 3a opposite foot end 3b from one to an undercarriage 2a of the mobile crane 2 rotatable superstructure 2 B solved and for the purpose of his from the mobile crane 2 separate transport on the attachment transport system 4 stored. The main boom 3 is hydraulically telescopic and lockable from a basic box in the usual way 3c and telescope sections guided therein.

2 is that from the mobile crane 2 and its main boom 3 Attachment transport system shown in isolation 4 out 1 refer to. In this illustration it is clear that the attachment transport system 4 an add-on part transport unit 5 with a mobile transport device 6 has which the recording of the main boom not shown here 3 serves. The transport device 6 is in the present case designed as a semi-trailer, the mobility of which depends on the coupling with a towing vehicle 7 of the attachment transport system 4 that goes back in the form of a tractor with the transport device 6 is coupled. The towing vehicle 7 typically has a vehicle cabin 7a on, from which the towing vehicle 7 and attachment transport unit 5 existing team of the attachment transport system 4 regarding the transportation of a main boom 3 can drive.

On the transport device 6 is a trestle 8th arranged, which in the present case on the underground U opposite loading area 6a the transport device 6 by means of a parallel to a longitudinal direction L the transport device 6 occurring and possible movement in opposite directions H along the loading area 6a is designed to be movable. The trestle 8th is designed to be one on the transport device 6 main boom 3 in the area of his head end 3a support (see 1 ). Furthermore is on the loading area 6a one of the trestle 8th in relation to the longitudinal direction L spaced storage 9 provided, the tray 9 in one of the vehicle cabin 7a of the towing vehicle 7 distant area of the rear end of the transport device 6 is located while the trestle 8th in a region of the front end of the transport device opposite the rear end 6 located and in this respect closer to the vehicle cabin 7a is located. Filing 9 is designed to be one on the transport device 6 main boom 3 in the area of his between his headboard 3a and its foot end 3b located basic box 3c support (see 1 ).

According to the invention, the attachment transport unit has 5 a loading arrangement 10 which in the area of the filing 9 and thus in the area of the rear end of the transport device 6 is located. The loading arrangement 10 has two loading arms in the present case 11 on, of which with reference to the representation of 2 only the loading arm in the foreground 11 can be seen, while the loading arm, which extends parallel to this in the present case and perpendicular to the sheet plane, is at the rear 11 due to the loading arm in the foreground 11 is covered. During the longitudinal direction L the transport device 6 parallel to a horizontal direction X runs, the two loading arms extend 11 in terms of an upright Y essentially above the loading area 6a while being spaced apart parallel to a vertical direction Z. Both loading arms 11 are about a common or their own axis of rotation 12 below the loading area 6 on the transport device 6 articulated. The loading arrangement 10 serves to load and unload a main boom, not shown here 3 by the two loading arms 11 by means of an active and in opposite directions possible pivoting movement S be pivoted around the axis of rotation / n 12. Here are the free carriers 13 every loading arm 11 for at least indirect temporal coupling with a main boom 3 provided what is present using at least one holding means 14 is feasible. This is said holding means 14 detachable between the loaders 13 of the two loading arms 11 arranged or can be arranged. In this way, the holding means 14 for example a kind of sling between the loading arms 11 be trained. To a detachable connection between the holding means 14 and main boom 3 manufacture, this can be done with its basic box, for example 3c into that from the holding means 14 formed loop can be stored. Alternatively or in addition, the main boom can 3 , especially its basic set 3c , have, for example, a ring-shaped connecting means, such as a welded-on eyelet or an eyelet arranged in some other way thereon, only about this eyelet or in combination with a partial gripping of the basic box 3c a detachable connection between the holding means 14 and the main boom 3 manufacture. Here is the holding device 14 limp as a band, belt, rope or chain.

The active execution of the swivel movement S the loading arms 11 takes place via linear drives 15 , of which due to the representation of 2 also only the linear drive in the foreground 15 can be seen. Each of these two linear drives 15 is between the transport device 6 and one of the two loading arms 11 incorporated. For the linear drives 15 it is preferably hydraulic cylinders. The use of electric drives is also conceivable.

With a view of the loading arm in the foreground and the form of the concealed loading arm 11 essentially identical loading arms 11 it becomes clear that these each have a straight central section 11a have. Each of these middle sections 11a extends between two end sections angled in the same direction 11b . 11c of the associated loading arm 11 , The end sections close 11b . 11 c and the middle section 11a of every loading arm 11 one angle each a . b between themselves. Preferably, that between the in the region of the axis of rotation 12 located lower end section 11b and the middle section 11a included first angles a that between that in the area of the load-bearing 13 located upper end section 11c and the middle section 11 a included second angle b correspond, as can be seen by way of example. In the present case, the two angles are a . b in each case from 165 ° to 135 °, preferably from 155 ° to 145 °, for example 150 °. The two angles a . b be identical or different.

Every middle section 11a of the two loading arms 11 has a coupling area 11d on which one each on one of the angles a . b opposite side of the associated loading arm 11 is arranged. In contrast, the transport device 6 two on their bed 6a arranged bearings 16 on, each essentially in the plane of one of the two loading arms 11 are located. The two linear drives 15 are so between the transport device 6 and the associated loading arm 11 incorporated that this has a first end with the coupling area 11d of a loading arm 11 are connected to transmit power, whereas their second ends opposite the first end each have one of the bearings 16 are coupled. In this arrangement the two end sections are 11b , 11c of each loading arm 11 to an associated linear actuator 15 angled away from the side.

The ones described in more detail below 3 to 6 are each the loading arrangement on one 10 containing section of the add-on part transport unit 5 limited, to better illustrate the functioning of the loading arms 11 and the linear drives 15 containing loading arrangement 10 each the area of the rear end of the transport device 6 shows.

3 is a maximum swung-out state of the two loading arms 11 can be seen from which before the time coupling of a main boom, which cannot be seen here in more detail 3 is taken. The loading arrangement 10 is designed and their linear drives 15 can be controlled so that their length changes can be made separately. This is done at least in sections within a cylinder tube 15a of the respective linear drive 15 mounted piston rod 15b through a linear movement possible in opposite directions M relative to the associated cylinder tube 15a shifted in its longitudinal direction. In this way it is possible to change the length of the linear drives 15 based swivel movements S the loading arms 11 to be carried out separately. The result is the swivel movements S of the respective loading arm 11 Can be executed both synchronously with one another and independently of one another.

In the present case, the two loading arms 11 due to the linear movements M of the two linear drives 15 recognizable around the axis of rotation 12 panned around. Because of doing so on a circular path K about the axis of rotation 12 coupling areas rotating around 11d the loading arms 11 becomes the first end of the linear drives connected to these in a force-transmitting manner 15 moved accordingly. As a result, their first end becomes like this opposite the loading area 6a raised that the respective linear drive 15 one opposite the loading area 6a angling to the associated camp 16 circulating limited rotation D takes place.

4 illustrates the to 3 opposite course of the individual movements of the loading arrangement 10 in a maximally swiveled-in storage state, when a main boom, not shown here, is picked up 3 on the transport device 6 or as an idle state, for example during the process of the add-on part transport unit 5 is taken. The loading arms became recognizable 11 about pivoting movements in the opposite direction S about the axis of rotation 12 swung back around by the linear drives 15 each via a linear movement in the opposite direction M were shortened in length. In this context, the coupling areas 11d of the two loading arms 11 again in the opposite direction on the circular path K about the axis of rotation 12 rotates around so that the two linear drives 15 in a parallel to the loading area 6a the transport device 6 extending level.

5 is a preferred further development of the loading arms 11 refer to. These can now be seen in two parts, each by one on the axes of rotation 12 articulated lower arm part 11e and one relative to this with a telescopic movement T Upper arm part that can be moved in opposite directions 11f exhibit. Because of this division of the loading arms in two 11 these are in the area of the middle section 11a designed accordingly telescopic, so that the distance between the axis of rotation 12 and the free carrier 13 of a loading arm 11 is adaptable if necessary, in particular can be enlarged and / or reduced. In this way, the load bearing 13 the loading arms 11 further to the foot end 3b of a main expector to be picked up 3 be shifted to an overhang of the main boom 3 about the holding device under it 14 to reduce in an advantageous manner. The telescopic movement T the loading arms 11 can either be simultaneously or separately from its pivoting movement S respectively.

6 shows a further preferred development of the tray 9 , The shelf is recognizable 9 by means of a folding movement K foldable in opposite directions on the loading area 6a the transport device 6 arranged. This makes it possible to file 9 fold down accordingly during periods when they are not used to store the main boom 3 is being used. Folding down means that the shelf is otherwise upright in the use position 9 required space is at least partially free, for example, the relocation of the main boom 3 and / or other parts of the mobile crane 2 to facilitate. Especially in the moments when any interfering edges of the main boom 3 and / or other parts of the mobile crane 2 otherwise with the shelf 9 collide, the required handling and / or maneuvering space can be released by folding them down.

• 7 ist der Fahrzeugkran 2 zu entnehmen, dessen Hauptausleger 3 beispielsweise zwecks Gewichtsreduktion von dem schwenkbaren Oberwagen 2b des Fahrzeugkrans 2 demontiert und separat transportiert werden soll. Entfernt zum Fahrzeugkran 2 ist das sich aus Anbauteil-Transporteinheit 5 und Zugfahrzeug 7 zusammensetzende Anbauteil-Transportsystem 4 bereitgestellt. Ersichtlich ist das Kopfende 3a des bereits zum hinteren Ende der Transportvorrichtung 6 der Anbauteil-Transporteinheit 5 hin ausgerichteten Hauptauslegers 3 angehoben, während der Fahrzeugkran 2 durch Stützvorrichtungen 17a, 17b gegenüber dem Untergrund U abgestützt ist. Erkennbar ist der Hauptausleger 3 in diesem Zustand in seiner Längsrichtung L1 gegenüber der Längsrichtung L der Transportvorrichtung 6 beziehungsweise der Horizontalrichtung X leicht aufgewippt. In einem nächsten Schritt wird die Transportvorrichtung 6 durch das Zugfahrzeug 7 an den Fahrzeugkran 2 angenähert, wobei deren Längsrichtung X und die Längsrichtung L1 des Hauptauslegers 3 zueinander ausgerichtet sind. Dies meint, dass deren beider Längsrichtungen L, L1 im Wesentlichen in einer gemeinsamen, zwischen der Horizontalrichtung X und der Hochrichtung Z aufgespannten Ebene verlaufen. Hierzu wird die Transportvorrichtung 6 mittels einer Verfahrbewegung V so weit in Richtung Fahrzeugkran 2 bewegt, bis diese unter einem Abschnitt des Hauptauslegers 3 angeordnet ist.

The ones described below 7 to 12 show the process of taking up the main boom 3 of the mobile crane 2 in detail:

• 7 is the mobile crane 2 see its main boom 3 for example to reduce the weight of the swiveling superstructure 2 B of the mobile crane 2 disassembled and to be transported separately. Removed to the mobile crane 2 is that from the add-on part transport unit 5 and towing vehicle 7 assembling attachment transport system 4 provided. The headboard can be seen 3a already to the rear end of the transport device 6 the add-on part transport unit 5 main boom 3 raised while the mobile crane 2 through support devices 17a . 17b towards the underground U is supported. The main boom can be seen 3 in this state in its longitudinal direction L1 against the longitudinal direction L the transport device 6 or the horizontal direction X slightly rocked. In a next step, the transport device 6 by the towing vehicle 7 to the mobile crane 2 approximated, their longitudinal direction X and the longitudinal direction L1 of the main boom 3 are aligned with each other. This means that their both longitudinal directions L . L1 essentially in a common, between the horizontal direction X and the vertical direction spanned plane. For this, the transport device 6 by means of a movement V so far towards the mobile crane 2 moved until this under a section of the main boom 3 is arranged.

8th shows that from mobile crane 2 and attachment transport system 4 existing mobile crane system 1 , The attachment transport system became visible 4 about its movement V so close to the mobile crane 2 brought up until their attachment transport unit 5 with the mobile crane 2 could be coupled. For this purpose, the transport device has 6 a coupling device 18 , which with a corresponding coupling device 19 of the mobile crane 2 is now releasably connected (see also 7 ). With the two coupling devices 18 . 19 can be, for example, one or parts of a trailer coupling.

9 it can be seen that the loading arrangement 10 by means of a linear motion M of linear drives 15 based swivel movement S the loading arms 11 on the forthcoming admission of the main boom 3 was prepared. Furthermore, the loading arms 11 by means of a telescopic movement T extended in their extension, thereby making their free-bearing 13 as far as possible in the direction of the swiveling superstructure 2 B of the mobile crane 2 were relocated. Before or afterwards the trestle became 8th by means of a sliding movement H towards the mobile crane 2 moved so that it is now exactly below the head end 3a of the main boom 3 is arranged. Alternatively or in addition, the head end can of course also be used 3a be telescoped accordingly to the required relative position between the head end 3a and trestle 8th to obtain.

10 illustrates the subsequent bobbing of the main boom 3 of the mobile crane 2 by means of a rocking motion W towards the transport device 6 , The rocking movement can be seen W of the main boom 3 so far that its headboard 3a now on the trestle 8th the transport device 6 is supported. The rocking motion W was done by actuating a rocker cylinder 2c of the mobile crane 2 , which in the usual way between the swiveling superstructure 2 B and the main boom 3 is arranged. Before or afterwards, the holding device became 14 so between the loaders 13 of the two loading arms 11 arranged that it is, for example, below the basic box 3c of the main boom 3 extends to a detachable connection between the main boom 3 and holding means 14 to establish. As an alternative or in addition to this, the holding means 14 also be guided - preferably not shown here - preferably in the form of a ring-shaped connecting means, such as an eyelet, for this purpose at a suitable point on the basic box 3c of the main boom 3 is arranged. Advantageously, said ring-shaped connecting means can be used, for example, on an upper side of the basic box 3c be located. The holding means can preferably 14 be equipped at least in some areas with a non-slip surface on one of the main booms 3 facing area is arranged.

11 is the separation of the main boom 3 from the mobile crane 2 and its beginning recording on the transport device 6 refer to. The luffing cylinder became visible 2c in the meantime from the main boom 3 separated, for example by dismantling a corresponding bolt. Furthermore, the foot end 3b of the main boom 3 from the superstructure in a manner not shown 2 B disassembled so that the main boom 3 now from the mobile crane 2 can be separated. For this purpose, a corresponding bolt was dismantled, for example. To the connection between superstructure 2 B and main boom 3 in the area of its foot end 3b to relieve the disassembly, this can already be done by means of a limited swivel movement S the loading arms 11 be raised. If not already done, any supply lines between the mobile crane still have to be installed 2 and main boom 2 be disconnected at the couplings provided.

By means of a linear movement taking place in the opposite direction M of linear drives 15 is now the previous swivel movement S also reversed in their direction so that the foot end 3b of the main boom 3 through a resulting decoupling movement e from the associated storage on the superstructure 2 B is lifted out. Simultaneously or independently of the swivel movement S the loading arms 11 their telescopic movement takes place T , so that their extension is shortened accordingly again. Because of the now only on the trestle 8th and the holding means 14 stored main boom 3 it is now possible to create a charging movement that forms a kinematic chain of the individual movements A1 to effect (see also 4 ). For this, the linear movements M of linear drives 15 the two loading arms 11 further by means of the resulting swiveling movements S pivoted, the trestle 8th inevitably via its passive shifting movement H parallel to the longitudinal direction L the transport device 6 towards the vehicle cabin 7a of the towing vehicle 7 is moved. As a result, the charging movement A1 one relative to the transport device 6 Combined translational and limited rotational movement of the main boom 3 which this from the mobile crane 2 leads away until this on the transport device 6 recorded and on the shelf 9 the transport device 6 filed, in particular supported. Through a movable arrangement of the holding means 14 this can change during the swivel movements S the loading arms 11 stress-free relative to the load bearing 13 align.

12 puts that on the transport device 6 recorded state of the main boom 3 represents which one in the area of its foot end 3b now on the one hand on the shelf 9 and on the other hand still on the trestle 8th is supported. For transporting the main boom 3 this is first in a manner not shown on the transport device 6 secured. Then the attachment transport unit 5 again from the rest of the mobile crane 2 decouples, which after lifting its support by lifting the support devices 17a . 17b also on its own initiative from its main boom 3 can be moved separately.

The connection of the main boom 3 with his mobile crane 2 is then carried out in the reverse order by means of a corresponding unloading movement A2 (please refer 3 ), in particular the independent control of the two loading arms 11 in combination with that in the supported state of the main boom 3 on the trestle 8th at least limited possible mobility, especially rotatability, of his head 3a on the shelf 8th both in the charging movement A1 as well as the unloading movement A2 can be used for any misalignment and / or angular misalignments between the foot end 3b of the main boom 3 and the associated coupling point on the superstructure 2 B of the mobile crane 2 compensate.

At the transport device 6 it can be, for example, a semi-trailer, a semi-trailer, a low loader or a trailer, to name just a few of the possible designs

LIST OF REFERENCE NUMBERS

1

A mobile crane system

2

mobile crane

2a

undercarriage

2 B

superstructure

2c

luffing ram

3

main boom

3a

head

3b

foot

4

Attachment transport system

5

Attachment transporting unit

6

transport device

6a

load area

7

towing vehicle

7a

cabin

8th

storage Bock

9

filing

10

loading arrangement

11

loading arm

11a

mid section

11b

End section, below

11c

End section, above

11d

coupling region

11e

Arm part, below

11f

Arm part, top

12

axis of rotation

13

supporting

14

holding means

15

linear actuator

15a

cylinder tube

15b

piston rod

16

camp

17a

support device

17b

support device

18

coupling device

19

coupling device

a

angle

A1

Recharge movement

A2

Unloading movement

b

angle

D

rotary motion

e

decoupling movement

H

displacement movement

K

orbit

L

Longitudinal direction of 6

L1

Longitudinal direction of 3

M

linear motion

S

pivotal movement

T

Telescoping movement

U

underground

V

traversing

W

rocking motion

X

Horizontal direction

Y

vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 19823380 A1 [0004]
• DE 3532296 A1 [0006]
• EP 0867399 A1 [0006]

Claims (30)

Add-on part transport unit (5) for an add-on part (3) detachable from a mobile crane (2) with a mobile transport device (6) for transporting the add-on part (3), characterized in that at least one loading arm (11 ) is arranged, on a free carrying end (13) of the loading arm (11) a mountable or already mounted attachment (3) can be coupled and the loading arm (11) is pivotally arranged on the transport device (6) such that an attachment to be loaded or unloaded (3) on the transport device (6) or from the transport device (6) can be moved down. Attachment transport unit (5) after Claim 1 , characterized by a trestle (8) which is arranged on the transport device (6) and is designed to support an attachment (3), in particular in the region of a head end (3a) of the attachment (3). Attachment transport unit (5) after Claim 1 or 2 , characterized by a shelf (9) arranged on the transport device (6), which is designed to support an add-on part (3), in particular in an area between a head end (3a) and a foot end (3b), Attachment transport unit (5) after Claim 2 or 3 , characterized in that the storage stand (8) is displaceable parallel to a longitudinal direction (L) of the transport device (6). Attachment transport unit according to one of the Claims 2 to 4 , characterized by a design of the storage stand (8) such that a main boom (3) which can be supported on its head end (3a) in the supported state on the storage stand (8) is movable, in particular pivotable in a vertical and / or horizontal plane , Attachment transport unit according to one of the Claims 1 to 5 , characterized by a pivotable arrangement of the loading arm (11) on the transport device (6) such that an attachment (3) to be loaded or unloaded can be moved on a path with a movement component in a vertical direction (Y) and a horizontal direction (X). Attachment transport unit according to one of the Claims 1 to 6 , characterized in that an attachment part (3) supported with its head end (3a) on the support block (8) and at least indirectly coupled to the free support end (13) of the at least one loading arm (11) by a pivoting movement (S) of the loading arm ( 11) into a) a combined translational and limited rotational loading movement (A1) relative to the transport device (6) towards the storage area (9), in particular away from the associated mobile crane (2), or into a b) relative to the transport device ( 6) the resulting combined translatory and limited rotational unloading movement (A2) away from the storage area (9), in particular towards the associated mobile crane (2), can be displaced. Attachment transport unit according to one of the Claims 1 to 7 , characterized by its design for receiving an add-on part (3) that can be detached from a rotatable superstructure (2b) of a mobile crane (2), in particular its main boom. Attachment transport unit according to one of the Claims 1 to 8th , characterized in that the transport device (6) is a semi-trailer. Attachment transport unit according to one of the Claims 1 to 9 , characterized in that the at least one loading arm (11) is actively pivotable. Attachment transport unit according to one of the Claims 1 to 10 , characterized by two spaced-apart loading arms (11), the pivoting movements (S) of the loading arms (11) being able to be carried out synchronously with one another and / or independently of one another. Attachment transport unit according to one of the Claims 1 to 11 , characterized by at least one holding means (14) which is detachably arranged on the carrying end (13) of the at least one loading arm (11) or between the carrying ends (13) of two loading arms (11), in particular the design of the holding means (14) at least one of the following configurations or a combination of at least two of the following configurations corresponds to: - belt, - belt, - rope, - chain. Attachment transport unit according to one of the Claims 1 to 12 , characterized in that the transport device (6) has a loading area (6a), the loading arm (11) being pivotable about an axis of rotation (12) below the loading area (6a). Attachment transport unit according to one of the Claims 1 to 13 , characterized by a linear drive (15), in particular hydraulic cylinder, arranged between the at least one loading arm (11) and the transport device (6), wherein a swiveling movement (S) of the loading arm (11) is based on a change in length of the linear drive (15). Attachment transport unit according to one of the Claims 1 to 14 , characterized in that the loading arm (11) has a straight central section (11a) which extends between two end sections (11b, 11c), in particular angled in the same direction, each end section (11b, 11c) and the central section (11a ) enclose an angle (a, b) between them. Attachment transport unit after Claim 15 , characterized in that the straight central section (11a) of the loading arm (11) has a coupling area (11d) which is connected to a first end of the linear drive (15) in a force-transmitting manner, a second end of the linear drive (15) opposite the first end is coupled to the transport device (6), in particular via a bearing (16) arranged on its loading surface (6a). Attachment transport unit according to one of the Claims 14 to 16 , characterized in that the end sections (11b, 11c) are angled toward a side of the loading arm (11) facing away from the linear drive (15). Attachment transport unit according to one of the Claims 1 to 17 , characterized in that the at least one loading arm (11) is designed to be telescopic. Attachment transport unit according to one of the Claims 1 to 18 , characterized in that the at least one loading arm (11) can be operated from outside a vehicle cabin (7a) of the mobile transport device (6) and / or a towing vehicle (7) which can be coupled to the mobile transport device (6), in particular by means of a wireless or wired connection operating unit. Attachment transport unit according to one of the Claims 11 to 19 , characterized in that the holding means (14) is at least partially equipped with a non-slip surface. Attachment transport unit according to one of the Claims 1 to 20 characterized in that the transport device (6) has a coupling device (18) which can be detachably connected to a corresponding coupling device (19), in particular a trailer coupling, of a mobile crane (2). Attachment transport unit according to one of the Claims 1 to 21 , characterized in that the tray (9) on the transport device (6) is arranged foldable. Attachment transport system (4), comprising an attachment transport unit (5) according to one of the Claims 1 to 22 and a towing vehicle (7) that can be coupled or coupled to a mobile transport device (6) of the add-on part transport unit (5). Mobile crane system (1) comprising a mobile crane (2) with a detachable attachment (3), in particular a main boom, and an attachment transport unit (5) designed to accommodate the attachment (3) detached from the mobile crane (2) according to one of the Claims 1 to 22 or an attachment transport system (4) Claim 23 , Method for receiving an attachment part detachable from a mobile crane (2) in the form of its main boom (3) onto a transport device (6) of an attachment part transport unit (5), in particular according to one of the Claims 1 to 22 , comprising the following steps: - providing the add-on part transport unit (5) in the extension of the mobile crane (2); - Aligning a longitudinal direction (L1) of the main boom (3) to a longitudinal direction (L) of the transport device (6); - Placing a head end (3a) of the main boom (3) on a trestle (8) of the transport device (6) by rocking the main boom (3) over the luffing cylinder (2c); - decoupling the luffing cylinder (2c) from the main boom (3); characterized by the following steps: - pivoting two loading arms (11) of the add-on part transport unit (5) until both loading arms (11) with their free carrying ends (13) are in the region of a boom section of the between the head end (3a) and foot end (3b) Main boom (3) protrude; - Arranging a holding means (14) between the carrying ends (13) of the two loading arms (11) such that the holding means (14) extends to a base box (3c) of the main boom (3), in particular below the base box (3c) of the Main boom (3) extends therethrough; - Establishing a detachable connection between the holding means (14) and the base box (3c), in particular by at least partially reaching around the base box (3c) with the holding means (14) from an underside; - Swiveling the two loading arms (11) in such a way that the main boom (3) is raised at least on one side via the holding means (14) which at least partially encompasses the base frame (3c) of the main boom (3) from the underside, thus creating a releasable connection between the vehicle crane (2) and the main boom (3) is at least partially relieved; - Separating supply lines between the vehicle crane (2) and its main boom (3); - Loosening the connection between the main boom (3) and mobile crane (2); - Swiveling the two loading arms (11) until the main boom (3), which is supported via the support bracket (8) which can be displaced parallel to the longitudinal direction (L) of the transport device (6), by means of a combined translational and limited rotary movement which takes place relative to the transport device (6) Charging movement (A1) is picked up away from the mobile crane (2) onto the transport device (6) and placed on a shelf (9) of the transport device (6). Procedure according to Claim 25 , characterized in that the mobile crane (2) is supported before the charging movement (A1) or before one of the steps preceding the charging movement (A1), in particular with respect to a subsurface (U). Procedure according to Claim 25 or 26 , characterized in that before the loading movement (A1) or before one of the steps before the loading movement (A1) the add-on part transport unit (5) is coupled to the mobile crane (2), whereby for transporting the on the transport device (6 ), in particular secured, main boom (3), if necessary, a previous support of the mobile crane (2) is canceled and the add-on part transport unit (5) is decoupled from the remaining mobile crane (2). Method for connecting an attachment part transport unit (5) on a transport device (6), in particular according to one of the Claims 1 to 22 , Main boom (3), which is supported with its head end (3a) on a trestle (8) and with a basic box (3c) between the head end (3a) and its opposite foot end (3b) on a shelf (9) , with an associated mobile crane (2), comprising the following steps: - Provision of the add-on part transport unit (5) with the added add-on part (3) in the area of the mobile crane (2) such that the main boom (3) with its foot end (3b ) is first aligned with a coupling point of the mobile crane (2) corresponding to its foot end (3b); characterized by the steps: - pivoting of two loading arms (11) of the add-on part transport unit (5) until the main boom (3) is replaced by an already arranged between the carrying ends (13) of the loading arms (11) and, in particular, by reaching around the basic box ( 3a) from a lower side, detachably connected to the basic box (3a) or to be arranged beforehand and, in particular by gripping the basic box (3a) from a lower side, releasably to be connected to the basic box (3a) from the holder (14) 9) of the transport device (6) raised and with its foot end (3b) ahead by a combined translational and limited rotary unloading movement (A2) which takes place on the basis of pivoting movements (S) of the loading arms (11) relative to the transport device (6) is at least partially moved from the storage area (9) to the mobile crane (2); - If necessary, aligning the foot end (3b) of the main boom (3) with respect to a corresponding coupling point of the mobile crane (2) by means of synchronous and / or mutually independent pivoting movements (S) of the loading arms (11); - Connecting the attachment (3) to the mobile crane (2); - Swiveling the two loading arms (11) until the holding means (14) detachably connected to the base box (3c) of the main boom (3) is released; - Detaching the holding means (14) from the carrying ends (13) of the loading arms (11); - Connecting supply lines between the vehicle crane (2) and its main boom (3); - Previous or subsequent connection of a luffing cylinder (2c) of the mobile crane (2) with the main boom (3). Procedure according to Claim 28 , characterized in that the mobile crane (2) is supported before the unloading movement (A2) or before a step preceding the unloading movement (A2), in particular with respect to a subsurface (U). Procedure according to Claim 28 or 29 , characterized in that before the unloading movement (A2) or before a step preceding the unloading movement (A2) the add-on part transport unit (5) is coupled to the mobile crane (2), whereby for moving and / or using the mobile crane (2) if necessary, a previous support is lifted and the add-on part transport unit (5) is decoupled from the rest of the mobile crane (2).

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